Quote:
Originally Posted by drwnwong
just a little bit confuse with this. how come the advan RS can be lighter than the others forged wheels? is it advan RS are cast wheels? which should be heavier compare to forged wheels.
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Cast wheels aren't always heavier. It all depends on the manufacturing process, like spun cast. Forged wheels have a denser metal and is heavier per square inch, but then you can make the material thinner to lighten the wheel without sacrificing strength.
There's even a difference in forged wheels. Look at the difference in weights of the HRE P43 and the Volk TE37.